Hydraulic winding machine



June 26, i951 H. A. JENSEN HYDRAULIC W'INDING MACHINE Filed Jan.v 6,1950 \-I nl llllllJ-.rlllilllllnhll LVIII/ffl;

Ive'nto'* Harold A. JeYlSeh,

His AdctoPTwey.

Patented .Tune 26, 1951 General Electric NewYork This invention relatesto winding machines and, in particular, to an improved arrangement vfortransferring wire from a spool to a resistor, coil or the like, whereinit is importantthat the wire be arranged at a predetermined pitch and ata predetermined tension during such transfer.

While winding machines are not' new in the art, since machines are inuse that axially move a piece of work while wire is being wound thereonto locate the wire at a predetermined pitch, yet 3 because of theinherent diiculties encountered in mechanical arrangements of this type,there is still the need in the art for an improved winding machine. l

Heretofore, with mechanically operated winding machines, it has beennecessary to vchange combinations of cams and ratchets or the like in4order tovary a pitch setting. vThis usually involved troublesometime-consuming operations which decreased the efciency of operator and:

machine. A I

It is an' object of this invention to provide an improved coil windingmachine.

It is a further object of this inventionzto pro,-

vide a hydraulic winding machine in r`which pre- 1 :determined settingsmay be varied'without inter- ,changing parts of the machine.

It is a still further object of this invention vvto provide a windingmachine that has a greater -eiciency, that requires less horsepowerl tooperate, and that will operate at higher 4winding speeds. i Broadly,this invention comprises an apparatus "that hydraulically moves a corein an axial direction within a chuck while the chuck and core arerotating, and wire is being wound under. preselected tension on thecore. The chuck leads the wire onto the core and the axial movementthereof gives a predeterminedpitch to the wire being wound on the core.

Further objects and advantages of this invention will become apparentandthe invention will be more clearly understood fromthe followingdescription referringto the accompanying drawing, and the features ofnovelty which characterize this invention will be pointed out withparticularity in the claims annexed to and forming a part of thisspecication.

Referring to the drawings, Fig. 1 is a View of a section taken throughthe longitudinal axis of this improved device; Fig. 2 is an end view ofthe chuck arrangement used to hold a flat core that is being wound; andFig. 3 is a similar end view of a modiedchuck arrangement `for windinground cores. y

fCompany, a corporation-,0f

Application January s, 1950, serial No. 137,179 l 2 claims. (Cl. 242-9)In Fig. 1, a cylindrical housing I is shownre'- volvably supported in apair of vbearings 2 and 3 which, in turn, are secured to a base plate'(not shown). A pulley 4- is securedto housingI and rotates it inbearings 2 and 3 when pulley 4-is rotated by a motor driven belt or thelike '(not shown). i

, Internally, cylinder l is divided by' a partition 5 into an upperstorage portion 6 and a lower storage vportion 1 A passageway 8 isprovided in "partition 5 to permit the passage of a liquid from upperstorage portion 6 to a lower storage portion 1. A needle valve 9controls the ow of the liquid through passageway'. A quantity of.hydraulic uid I0 is contained Vwithin lower storage portion 1 and isheld underpressure by anexpandable diaphragm Il. A plugIZv is securedihtdthe lower end of cylindrical housingv I to sealy lower hstorageportionA 1 from bearing 3. A* protrusion I3, which is an integral partof 4plug I2, extends lthrough bearing: 3 and is rotatable. therein.` ;:1

' A fluid pumpl I4 -is secured as bybushing:2t1 to vprotrusion I3 toberotatableptherewith;

I4 comprises a cylinder l5 and a piston 15. Piston I6, in turn,isfse'cured as bya crankfipin Y ISa to a crank arm I1. Crank arm I1 isrotatable Vabout a shaft I8 whose axis is out of alignment i with theaxis of cylindrical housing I. A bearing I9 is provided 'onshaft I8 tofacilitate the rotation of crank arm 'I1v about the shaft. With this`structure rotaryV motion 'is imparted to crank arm I1 by piston I6through its pin IBa.

Since shaft I8 is out of alignment with the axis of cylindrical housingI, then, at a position 18,0

degrees from that shown in Fig. l, piston I6 is deeper into cylinder I5than it is in the position `shown. Consequently, as housing I, plug I2,protrusion I3, pump I4, piston IB, and crank arm I1 rotate at the samenumber of revolutionsL per minute, a reciprocating pump strokevisimparted to piston I6.

The alignment'of shaft IB with theaxis of cylindrical housing I isvariedv by an arrangement which comprisesy a pitch setting dial 20 and athreaded adjusting screw 2| supported ina fixed block 22. Y Byvarying'the setting of dial 20, sc rew 2| moves vaxially in relation toblock 22 and thereby moves a bushing 23 that varies the position ofshaft I8. With this arrangement, the displacement of shaft I8 relativeto the axis of housing l and, hence the length of stroke of piston I6,can be varied.

' Within plug I2, protrusion I3 and pump I4, a

-. valving arrangement is provided for vthe pump.

Specifically, a port chamber 24 is provided in plug of larger diameterthan port chamber 24 extends from the other end of the chamber.A..tubef3I connects duct to upper storage portion 6. A ball 32 having adiameter largerthari: duct. is positioned between port chamberll andduct 28, While a second ball 33 axially slidable in duct 30 ispositioned between port '24s.-

duct 30. A spring 34 is positioned between the two balls, While asecondjspring 35 maintains ball 33 in contact with the end of duct 30that con- Beets4 with; pontichamber'iui The ytension on :springiadjustalileby setuscrewftz.

With this. valying; arrangement,yat. the suc'- stroke. ofi pumpfIlIfthe'f-.pressure fin. port-cham.- .ber 24 is lessthan that. in"'tube'I 29orf tube- 3I. Ball because;l on the pressurey on .spring-35seals tube 3I from port chamber 24, but tliepressuref of: uid ini tube2.9v forces ball-"32:1 'towards ball. 33, allowingfuid' to` enter from:lowerV storageportioni'f: ihtop'ortchamber 24: rOnthe pres sure strokevoffpumpzIll,V the pressureof the-liquid import-chamber' 2.4 is; greaterAvthanl that in either tube: 2E o1'f3If. 'llheepressure ofthe4 'liquidplus pressure oispring. 34 on fballf 3m sealsfthezpo'rt oliamberfronttube2 9;. butthezpressurezaiof spring 34;:r'plusa thepressure ofitheliquid forces ballr 33 .awafy'from ballz32 toallow liquid toz'passfromyport: chamber 214.-' into'rizulaeV 3l?.

"llhislcycle is` continuouslyI repeatedwhilei pulley 4*-v is-fbeingdriverrtov rotatecylindrica'l housing I and pump; If4Y Consequently,theref is' an' intermittentspulsationthatiforcesa quantityf'ofliquid,c'zleterminedl byfthe`4 lengthy of' pump stroke,4 into tubea".

A 'plunger 37 provided'in. upper'storage .por-- tient-165;v The plungerhas a diameter substantiallyfequallto thefinnerf diameter of? the uppervstorage portionf and` ist4 in vslidalzvlle lengagement"therewith..Actually.; plunger .31" and upper storage portion 6 form'- a; .pistonVand cylinder: arrangement. H plungerrod extends upwardlyfrom plunger 3'Ithrough a1 cap' 39f which closes the upperen'd 'of' upper'storage:portion. 6".. Cap.. 39, in addition to.1closing theupper' end oi storagepoltion, has .anx extended; portion' Y4.0; that vrides withiIrbearingZand'guides the-notation `o'f'cylindrical. housing A ,spring 4liis.positioned between` cap239 and plunger'35l andbiases theplunger.awayff'rom.- the cap.;

The,` slugs= ofiliquid' which. are;y cyc'lically4 forced by pump I4through tube 3| enter the upperstorage portion through a venti 42 .andforce plunger 351;"towards'z cap 39'` inv opposition tothe bias of`spring `Sincefpump' Iii? goes through a completelA cycle every`revolution ofl cylindrical housimg;A I.,. plunger 3:1" i'sf 'raised avpredetermined distance-fior every. complete revolution of cylindricalhousing fI and, consequently; a point onplunger rod38f isgivena leaddepending upon the amount that plunger 3f! i's raised each revolution.

.chuckJ 4'@ is. securedr above' .bearing 2 to the upper end of cap 39and is rotatable therewith. The `chuck comprisesa bushing 'fill'v andiay pair .oi'fchuck jaws45. A dat coillform 46, Whichfmay oli mica orother" suitable material; isheld 4 by jaws 45 and rotates with thecylindrical housing I.

The upper end of plunger rod 38 is provided with a threaded bore 41 foraccommodating an adjusting screw 48. Rod 38 and adjusting screw 48rotate with housing I and, in addition, an axial movement is imparted tothe rod and adjusting screw by the liquid that'. is pumped throughfvent42- into Vupper storage portion 6. Consequently, the at coil form 46,which is in slidable engagement with chuckl jaws 45, while rotating at.the same number of revolutions as housing I, is pushed upwardly byadjusting screw V4i! atfalratefthair is predetermined by the length ofpumpstrokeof piston I5 in cylinder I6.

If it is intendedV to Wind strip 46 with a resitanee wireftheresistancewire 49 is secured to the top Vof the strip and cylindrical housing I isrotated, whereupon resistance wire 49 is wound upon strip 46 at apredetermined pitch.

It? `any of the. 'usuali tensioning; apparatus is used; such. as` that.indicated at 49a., then resist.- ancewire 49 isappliedzto: strip46;under:a tension,

`as required. The upper: end. of. `chuclr jawsv 4.5

serve .as-a guideto. lead resistancel wire `49 onto strip.- 46'.

The detail'sof chuck: 41 are; morefclearly illustratedinEig". 2.ASpecifically; each. ofsrthe, jaws 45'comprises-fa bar of -spr-ingymetaionthelike that .is secured'. toi bushing 44: by some; means, such.` as.'byv welding.v The; jaws: are vmounted in alignment 1802 vdegreesv apart.Each of the'. jaws hasfa V-shaped groove 582 for gripping Strip Mi Withthis structure, strip 46 is securely, Abut'slidabliy. held by the.friction between chuclsjaws 45 and theved'gesof .the strip.

Obviously,r chuck jaws' 45Lcouldzzbe `arranged# to accommodateanyslfia'pe.v core, for instance, they couldVv be madesemi-ecircularVas; jaws' 5I shown inFig. 3, whereupon a..circularzcor.e;52; thatis provided with any sort of a protrusion.:53 could Vbe lrotatedwithhousing: Iv while a. lead is being imparted to it by--pl'unger rod38. and adjusting screw` 48;

In@ the operation: of; this improvedf windingfmachine, a. coil* formAadapted to 't'. the chuck jaws in use is slid ax'iall'yfinto: thechuckanda wire of the type to be woundv is secured'to the core. Needlevalv'e19-V i'saclosed and.' pulley. '4" is' driven by some means,suchyasrarmotor' (not shown); Diaphragm `I1'I.',acting on hydrauliciluid I8" in lower storage portion 1, forces the uid through tubeintopump 1&4", which, inturn; forces a slug of fluid into tube 3lyduring each revolution of pulley-41 The sizeof the slug of liquid ispredetermined by the position of.` pitch setting dial "2U, whichregulates the amount' of' eccentricity of crank arm Iv'I-g They slugof'liquidi passes from tube 3I through; Vent/.'42 into` upper .storageportion 6. The liquid in the upper storage portion forces Yplungerv 31;plunger rod"38, andadjusting screw v48 axially through cap 39. Thecombination of' the rotation ofhousingl I' and chuck 43 with the axi'almotionof' adjusting screwA 48 winds wirey 49= about corel 46' atapredetermined pitch. j

It is obvious tl'iat` aprotrusion-'may be provided on cylindricalhousingV I that will trip a revolution counter (not shown)v to shut oifthe driving motor after' a predetermined number of revolutions. In suchcase, an operator merely inserts a core-into chuck 435,'starts themotor, allows it to run itsV predetermined numberl of revolutions, 'and'then' secures-the end of thev wiretothe core, whereupon a completelywound core'i's` formed.

After each core is wound, it is necessary to release needle valve 9-,whereupon spring 4 I, which is biased between cap 39 and plunger 31,forces plunger 31 away from cap 39, and the hydraulic fluid is forcedfrom upper storage portion 6 through passageway 8 into lower storageportion l. When needle valve 9 is again closed, the apparatus is readyto wind another core.

Modifications of this invention will occur to those skilled in the artand it is desired to be understood, therefore, that this invention isnot to be limited to the particular embodiment disclosed, but that theappended claims are meant to cover all the modifications which arewithin the spirit and scope of this invention.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is:

1. In a machine adapted to wind wire on a core at a predetermined pitch,a rotatable cylinder having an upper and a lower hydraulic fluid storagecompartment, a partition between said compartments, said partitiondefining a fluid passageway joining said compartments and including avalve for closing said passageway, means for rotating said cylinder, apump comprising a cylinder and piston arrangement rotatable with saidcylinder, means connecting the input of said pump to said lower fluidstorage compartl ment, means connecting the output of said pump to saidupper storage compartment, a quantity of hydraulic uid adapted to beheld in said lower storage compartment, expandable means within saidlower compartment for exerting a pressure on said hydraulic fluid insaid lower storage compartment, eccentric means for imparting a cyclingtransverse movement to said piston while it is being rotated, means forvarying the eccentricity of said eccentric means, a plunger in slidingengagement with said upper storage compartment, said plunger beingbiased to force fluid through said partition passageway, said pumpforcing a predetermined quantity of fluid into said upper storagecompartment to lift said Yplunger when said partition passageway valveis closed, a core adapted to have wire wound thereon, a, chuck includingrjaws adapted to lead wire onto said core and to position said corewhile allowing axial slidable movement thereof, means interpositionedbetween said plunger and said core to axially slide said core apredetermined distance with each revolution of said cylinder, and meansincluding said chuck for leading a wire onto said core under tension,whereby said wire is wound on said core at a predetermined pitch.

2. In a machine adapted to wind wire on a core at a variable pitch thatis constant for any one setting, a core adapted to have a wire woundthereon, a chuck including jaws adapted to lead wire onto said core andto holdsaid core while allowing axial movement thereof, means forsupporting said chuck including a` rotatable cylinder, said cylindercomprising; an upper and a lower fluid storage'compartment, meansincluding va pump rotatable with said cylinder for forcing fluid fromsaid lower to said upper storage compartment, means for varying thefluid output per cycle of said pump, a plunger axially movable in saidupper fluid storage compartment, said plunger being adapted to moveaxially in response to the quantity of liquid forced by said pump intosaid upper storage compartment, means interpositioned between saidplunger and said core for axially sliding said core a predetermineddistance for each ,revolution of said cylinder, and means including saidchuck for leading a wire onto said core under tension, whereby said wireis wound on said core at a predetermined pitch.

HAROLD A. JENSEN.

REFERENCES CITED FOREIGN PATENTS Country Date France Oct. 20, 1916Number

